Slack-burning furnace



(No Model.) y 2 Sheets-Sheet 1. T. WILKINSON &J. GLENDINNING.

SLAGK BURNING FURNACB.

Patented Feb. 19, 1889.

HINHIIIIVHHIIIIIHH IIIIIHH HH 'IIIIIH u H H Hrlndn l 3pm/autom (No Model.) 2 Sheets-Sheet 2. T. WILKINSON 8v J. GL'BNDINNING.

SLAGK BURNING PURNAGE.

No. 897,951. Patented Feb. 19, 1889.

fm. M.

@XN/Cucco@ N. PETERS. Phnmumogrzpnw. wmmgwn. D. c.

UNITED STATES PATENT OEE-ICE.

THOMAS VILKINSON AND JOHN GLENDINNIN l, F ILNSAS CITY, llIlSSOURI.

`SLACK-BUFNING FURNACE.

SPECIFICATION forming part of Letters Patent No. 397,951, dated February 19, 1889.

Application filed July 30, 1888. Serial No. 281,368. (No model.)

T0 @ZZ whom it may concern.' lengthwise of the furnace is an ash-pit, a2. Be it known that we, THOMAS NVILKINSON At the back end of the grate a solid wall of and JOHN GLENDINNING,citizens ofthe United masonry, I), slants upwardly and rearwardly 55 States, residing at Kansas City, inthe county from the furnace-floor, and, as it extends rearof Jackson and `State of Missouri, have inwardly below the boiler, serves to support the vented certain new and useful Improvements rear end of the boiler and form a channel for in Slack-Burning Furnaces; and we do herethe products of combustion between its upper by declare the following to be a full, clear, surface and the boiler. 60 and exact description of the invention, such The grate is mounted upon four caster- Io as will enable others skilled in the art to wheels, E, from the axles e of which standwhich it appertains to make and use the same. ards e extend upwardly and are firmly united Our invention relates to an improvement in by suitable girders. (Not shown.) In the upslack-burning furnaces. per portions of the said standards e drums F `6 5 The object iste provide a vfurnace of the are journaled, one between the two front above character which will effectually constandards and the other between the two rear sume the slack, and which will at the same standards. On the drums F the grate G is time consume the smoke and be self-cleaning. mounted. The said vgrate forms, as a whole,

Tith these ends in view our invention conan endless apron or carrier, which is caleu- 7o sists in certain features of construction and lated to travel continuously to carry the slack 2o combinations of parts, as will be hereinafter from the front to the rear along its upper described, and pointed out in the claims. surface as the said slack is gradually fed In the accompanying drawings, Figure l is thereto. a top plan view of the grate. Fig. 2 is a lon- The grate G is composed of a plurality of 75 gitudinal vertical section through the grate, short bars g, constructed and combined as fol- 2 5 the feed, and a portion of the boiler. 1 Fig. 3 lows: Each bar g is constructed thickeratits is a front View of the fnrnace-wall and grate upper edge than at its lower edge, as is usual. bed and ash-pit, the grate itself being re- The ends of each bar are eut underin curved moved; and Fig. 1 is a partial transverse secform, as shown a't g', in orderto admit of the 8o tion through grate, showing the grate-bar in bars being turned with respect to one another cross-section. to form the contour of the drums F. Each A A represent the side walls of the furnace, bar is provided near its ends with perforaand B represents an arch over the top of the tions extending transversely through the bar, fire chamber in front of the boiler C. through which rods or bolts H loosely extend 85 Through the arch B is a .narrow opening, Z), to bind the different bars together. The bars 3 5 the width of which is preferably coextensive are assembled as follows: Beginning with a with the width ot' the arch itself, the said bar at the outside, the next bar toward the opening extending from the front of the arch center has its perforation in its forward end toward the boiler and then downwardly, openplaced so as to register with the perfora- 9o ing into the fire-chamber such a distance tion at the rear endof the outside bar; then 4o from the feed as to furnish air to the fire at comes the next bar toward lthe center in posithat point where the smoke is most dense and tion directly opposite the outside bar; then the heat sufficient to effectually consume the comes the next bar toward the center in smoke when aided by the inllux of the air. It position directly opposite the second bar 95 will be observed that the air is admittedin a mentioned, and so on, the bars when united thin sheet extending entirely across the top forming transverse series of parallel bars, each of the fire-chamber, whereby oxygen is furseries alternating with the bars of the next nished to the entire volume of smoke and gas series to the front or rear of it. Furthermore, as it flows beneath the boiler. the bars are so spaced apart, either by bosses roo On the floor a of the furnace and near the g3, formed on their sides around the perfora- 5o side walls, A, are located tracks d', on which tions, or by spacing-washers g4, inserted bethe grate is mounted, as will hereinafter aptween each two, or by both, as to turn freely pear. Centrally of the oor and extending on their connecting-rods, and also admit the necessary amount of air to flow up between them to produce efl'ective combustion. The drums F are polygonal in cross-sections, and their fiat sides f are of such widths as Vto eX- actly correspoml to the under edges of the different series of bars y as tlmy turn around the drums.

Over the front of the grate and in front of the arch through which air is fed to the firechamber a feed funnel or hopper, I, is located, through which the slack, either alone or mixed with other fuel, is fed onto the front end of the grate. The grate is actuated by a sprocket chain or band leading from a pulley, K, driven by a suitable power to a corresponding pulley, 7u, fixed on. the shaft of one of the drums F. Thus as the slack is fed onto the grate it will be carried thereby rearwardly, and before reaching the end of the grate will have been completely consumed, and the ashes will be carried by the grate over the rear drum F and dumped into the rear end of the ash-pit against the inclined wall D.

In order to remove the ashes they fall, A and thereby keep a free circulation of air be neath the grate, we provide the ash-remover, constructed follows: Between the two front and two rear standards, e', sprocket-wheels L are mounted, and sprocket-chains l connect the slnoeket-wheels at the front with the corresponding sprocket-wheels at the rear. To the said sprocketchains Z scoops M are secured, which, as they are carried by the chains rearwardly and upwardly in proximity to the inclined wall D, catch the ashes as they fall from the grate and conduct them toward the front and dump them into a pit prepared to receive them. In order to give the sprocket-- chains with their scoops, the proper movement, an intermediate gear-wheel or sprocketwheel--prefei ably a gear-wheel, N-is interposed between a sprocket-wheel, 0, fixed to the shaft oi the drum F, and a gear-wheel, o, fixed on the shaft of the sprocket-wheel L. A sprocket-chain, l?, connects the sprocketwheel O with a corresponding sprocket-wheel,

p, fixed to rotate, with intermediate gearwheel, N.

The grate, with its ash-moving mechanism and its feed funnel or hopper, is free to be rolled into and out of the furnace on the tracks a. To prevent the slack or other fuel from falling down at the sides of the grate, guard-pieces Q are secured along the upper corners of the furnace.

Having thus fully described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. The combination, with a suitably-mounted endless carrier-grate, of an endless carrier ash-remover mounted beneath said grate and provided with scoops, substantially as s et forth.

2. The combination, with a grate-supporting frame and the endless carrier-grate mounted in the frame, of an endless carrier ash-remover supported in the frame beneath the grate, substantially as set forth.

3. The combination, with the grate-support.- ing frame and the inclined ash-pit wall atthe rear of the grate, of the endless carrier-grate supported in the frame, and the ashfremover consisting of a series of traveling scoops arranged to travel in proximity to the said inclined wall below the grate, substantially set forth.

4. The combination, with the grate-supporting frame, the endless grate supported therein, and mea-ns foractuating the endless grate, of an ash-remover supported by the fra-me, and a connection between the ash-remover and the grate, whereby the motion of the grate imparts motion to the ash-remover, substantially as set forth.

In testimony whereof we have affixed our signatures in presence of two witnesses.

THOMAS VILKINSON. JOHN G-LENDINNING.

Witnesses:

Bassin E. YOUNG, LENA MAcKov. 

